Reaction kinetics in the combustion synthesis of Al-Ir-Ni intermetallic compounds

Kai Cai, Machiko Ode, Hideyuki Murakami

研究成果: Article査読

抄録

The combustion synthesis of Al50 Ir48Ni2 (at.%) was conducted at different heating rates in both a differential scanning calorimetry (DSC) chamber and a vacuum furnace. It was found that a higher heating rate, a sufficient amount of reactant powder, and effective control of the heat loss facilitated the complete reaction and resulted in combusted single IrAl phase products. Otherwise, multiphase products containing IrAl, unreacted Ir, and Al3Ir were synthesized. The reactions involved in different processes were discussed in terms of the thermal competition between heat generation and loss during the reaction. All ignition temperatures were below 773 K, indicating that the combustion reaction occurs at the solid-solid state. With increasing heating rate, the ignition temperature increased while the product density decreased.

本文言語English
ページ(範囲)1953-1960
ページ数8
ジャーナルJournal of Materials Research
23
7
DOI
出版ステータスPublished - 2008 7 1
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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